Amazon S3 (simple storage service) is an online object storage service from Amazon Web Services. QUESTIONS MUST BE ABOUT PROGRAMMING. Questions about general S3 support, functionality, configuration, etc. are OFF-TOPIC.

Do not use this tag. For questions related to an aspect of the world wide web, use a more specific tag for it, such as [uri], [html], [http] or [w3c].

Fragments represent reusable behaviors or portions of the user interface in an Android app.

npm is the package manager shipped with Node.js. It can be used to install and publish CommonJS and ECMAScript modules, jQuery plugins, reusable JavaScript code (libraries), JavaScript-based CLI programs, and more.

Ionic is a front-end framework for developing native-feeling hybrid mobile apps with HTML and Sass. Traditionally, it runs on top of Cordova and Angular, but since Ionic 4 it supports Angular, React, Vue.js and Web Components running on top of Cordova or Capacitor.

Use this tag for questions about interacting with Google Sheets programmatically. Use with: [google-apps-script] for questions relating to inbuilt scripting language, [google-sheets-formula] for questions relating to formula design or [google-sheets-api] and the tag of language (eg:[python]) for questions relating to sheets api usage.

Recursion is a kind of function call in which a function calls itself. Such functions are also called recursive functions. Structural recursion is a method of problem solving where the solution to a problem depends on solutions to smaller instances of the same problem.

A session refers to the communication between a single client and a server. A session is specific to the user and for each user a new session is created to track all the requests from that user.

Hadoop is an Apache open-source project that provides software for reliable and scalable distributed computing. The core consists of a distributed file system (HDFS) and a resource manager (YARN). Various other open-source projects, such as Apache Hive use Apache Hadoop as persistence layer.

Web scraping is the process of extracting specific information from websites that do not readily provide an API or other methods of automated data retrieval. Questions about "How To Get Started With Scraping" (e.g. with Excel VBA) should be *thoroughly researched* as numerous functional code samples are available. Web scraping methods include 3rd-party applications, development of custom software, or even manual data collection in a standardized way.

Heroku is a cloud platform for Ruby, Node.js, Python, Scala, Clojure, Go, PHP, and JVM-based applications. It features Git-based, GitHub, and API deployment strategies, a large number of services offered as add-ons, and a full API.